30 Journal New York Entomological Society. [Voi. vii. 



gin yellow in basal two-thirds, elytra each with margin beneath the humerus, sculellar 

 spot, and four transverse bands which extend from the side margin to the sutural in- 

 terval, yellow. Head closely punctate, vertical carina distinct. Thorax rather less 

 than twice as wide as long, moderately rounded and narrowed in front, side margin 

 not visible from above, dorsal impressions feeble, the lateral terminating in punctiform 

 basal fove^e ; punctuation a little finer at the middle, but dense and nearly uniform 

 throughout. Elytra as wide at base as the thorax, rather gradually narrowed to apex, 

 striae and punctures moderate, intervals with the usual series of punctures. Hairs of 

 upper surface whitish, inclined backward on the elytra, and forward on the thorax. 

 Presternum truncate in front, .sparsely punctate at middle ; abdomen rather closely 

 not coarsely punctate, the punctures nearly uniform in size and distribution ; last 

 ventral with distinct apical plate, the free edge thin and feebly arcuate. Length, 9.5 

 mm., .38 inch. 



Habitat: California (Los Angeles Co.), Arizona. 



A single specimen from the former locality in the National Museum 

 collection was captured by Mr. Coquillett and has served as the basis 

 of the above description. I have seen three others in the Horn col- 

 lection (there placed with decipiens') from Arizona. The hind tarsi 

 are unusually short, barely equalling one-half the tibiae. 

 A. texana Z^r., Trans. Am. Phil. Soc, Ser. 2, Vol. XI, p. 228. 



A small species of the same general aspect as tuhilus and neglecta, 

 but the hairs are fine and longer, and the ventral plate is thin and 

 well-developed ; the thorax is also less narrowed in front. Length, 

 6.5 mm., .26 inch. 



Habitat: Texas. 

 ' I know of no examples except the single specimens in the Leconte 

 and Horn cabinets. 

 A. subbalteata Lcc, New Species, 1863, p. 82. 



Known only by the unique type in the Leconte cabinet. I have 

 seen two examples from New Mexico, which either belong here or to 

 a closely allied species, but renewed comparison with the type would 

 be necessary to decide the question. Length, 6 mm., .24 inch. 



Habitat : Peninsula of California. 

 A. opinabilis, sp. nov. 



Moderately convex, subopaque, the thorax less dull and slightly bronzed, elytra 

 ornate with yellow, upper surface with short whitish suberect sette which are coarser 

 toward the apex. Head densely punctate, vertex carinate. Thorax scarcely twice as 

 wide as long, sides arcuate and widest a little in front of the base ; surface densely 

 punctate, basal foveas as in ciilta, sides with yellow spot. Elytra a trifle narrower 

 than the thorax, gradually narrowed behind, punctures of stria: coarse, intervals rather 

 narrower than the striae. The maculation may be described as consisting of about 

 four irregular transverse spots which tend to coalesce longitudinally Abdomen 



